diff --git a/lib/fimg-math.c b/lib/fimg-math.c
index df470b3..d8513b0 100644
--- a/lib/fimg-math.c
+++ b/lib/fimg-math.c
@@ -84,7 +84,7 @@ for (foo=0; foo<(head->width*head->height); foo++) {
 	add  = head->R[foo];
 	add += head->G[foo];
 	add += head->B[foo];
-	head->R[foo] = head->G[foo] = head->B[foo] = add;
+	head->R[foo] = head->G[foo] = head->B[foo] = add / 3.0;
 	}
 return -1;
 }
diff --git a/lib/fimg-pnm.c b/lib/fimg-pnm.c
index 5af3f63..16656a6 100644
--- a/lib/fimg-pnm.c
+++ b/lib/fimg-pnm.c
@@ -168,11 +168,12 @@ if ( flags & 1 ) {
 					head->fval, head->count,
 					head->fval * head->count);
 	fk = (head->fval * head->count) / 65535.0;
+	fprintf(fp, "# fval/count  %f  %d\n", head->fval, head->count);
 	}
 else	{
 	maximum = fimg_get_maxvalue(head);
 	fk = maximum / 65535.0;
-	fprintf(fp, "#  maxval  %15f\n# divisor  %15f\n", maximum, fk);
+	fprintf(fp, "# maxval  %15f\n# divisor  %15f\n", maximum, fk);
 	}
 
 fprintf(fp, "65535\n");
diff --git a/v4l2/Makefile b/v4l2/Makefile
index fe6c561..690aa7a 100644
--- a/v4l2/Makefile
+++ b/v4l2/Makefile
@@ -17,7 +17,7 @@ rgb2fimg.o:	rgb2fimg.c funcs.h Makefile
 v4l2_pr_structs.o:	v4l2_pr_structs.c v4l2_pr_structs.h Makefile
 	gcc ${COPT} -c $<
 
-grabvidseq: grabvidseq.c Makefile rgb2fimg.o
+grabvidseq: grabvidseq.c ${DEPS} rgb2fimg.o 
 	gcc ${COPT} $<  rgb2fimg.o ../libfloatimg.a -lm -lv4l2 -o $@
 
 video-infos: video-infos.c Makefile funcs.o v4l2_pr_structs.o
diff --git a/v4l2/grabvidseq.c b/v4l2/grabvidseq.c
index 04d20b0..00c577f 100644
--- a/v4l2/grabvidseq.c
+++ b/v4l2/grabvidseq.c
@@ -316,7 +316,7 @@ if (to_gray) {
 if (verbosity) fprintf(stderr, "saving to '%s'\n", outfile);
 
 if (upscaling) {		/* nasty workaround */
-	cumul.count /= 4;
+	cumul.count /= 4;	/* WTF ? */
 	}
 
 foo = fimg_save_as_pnm(&cumul, outfile, 1);